A high-precision micro base assembly positioning and assembling device

Abstract

The utility model relates to the technical field of precision machinery assembly, disclose a high accuracy small base assembly positioning assembly device, including the workstation, the top fixed connection of workstation has the coarse positioning mechanism, the bottom inner wall fixed connection of workstation has the fine positioning mechanism, the coarse positioning mechanism includes the disc, the inner wall rotation of disc is connected with the rotary disc, the bottom fixed connection of rotary disc has drive assembly, the inside of rotary disc is provided with a plurality of arc holes, the inner wall slide of arc hole is connected with the sliding column, the top fixed connection of sliding column has the sliding block, the inner wall of sliding block is detachably connected with the replacement subassembly, in the utility model, the coarse positioning mechanism, motor drive gear no.

Description

Technical Field

[0001] This utility model relates to the field of precision mechanical assembly technology, and in particular to a high-precision micro-sized base component positioning and assembly device. Background Technology

[0002] A positioning assembly device is a piece of equipment used to precisely position and fix a workpiece or component during the manufacturing process. It typically integrates mechanical, optical, or electronic control systems to ensure assembly accuracy and efficiency.

[0003] The positioning and assembly device is used to quickly and accurately adjust the position of the workpiece and achieve stable clamping by combining coarse and fine positioning, thereby meeting the high-precision assembly requirements (such as micron-level repeatability positioning accuracy), while improving production efficiency and compatibility. It is suitable for automated assembly in fields such as precision machinery, electronic components, and MEMS devices.

[0004] In existing technologies, some positioning and assembly devices are prone to millimeter-level positional deviations when manually loading or placing workpieces with robotic arms. If nanometer-level linear motors are used directly for precise positioning, frequent and large-scale adjustments are required, resulting in low efficiency and easy overtravel wear of the mechanism. Therefore, a high-precision micro-miniature base component positioning and assembly device is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a high-precision micro-sized base component positioning and assembly device, which aims to improve the problem that the direct use of nanoscale linear motors for precise positioning in the prior art is prone to causing overtravel wear of the mechanism.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A high-precision micro-sized base component positioning and assembly device includes a worktable, a coarse positioning mechanism fixedly connected to the top of the worktable, and a fine positioning mechanism fixedly connected to the bottom inner wall of the worktable.

[0008] The coarse positioning mechanism includes a disc, a rotating circular plate rotatably connected to the inner wall of the disc, a driving component fixedly connected to the bottom end of the rotating circular plate, a plurality of arc-shaped holes opened inside the rotating circular plate, a sliding column slidably connected to the inner wall of the arc-shaped holes, a sliding block fixedly connected to the top end of the sliding column, a replacement component detachably connected to the inner wall of the sliding block, a support frame fixedly connected to the rear side of the top of the worktable, and an industrial camera fixedly connected to the front side of the top of the support frame.

[0009] The above technical solution, by combining a coarse positioning mechanism and a fine positioning mechanism, enables rapid positioning and assembly of micro-sized base components, improving overall assembly efficiency and reducing reliance on manual operation.

[0010] As a further description of the above technical solution:

[0011] The precision positioning mechanism includes two cylinders. The bottom ends of the two cylinders are fixedly connected to the bottom inner wall of the worktable. The driving ends of the two cylinders are fixedly connected to an annular plate. The top end of the annular plate is fixedly connected to a positioning disk. The inner wall of the positioning disk is fixedly connected to three nanometer-level linear motors. The driving ends of the nanometer-level linear motors are fixedly connected to L-shaped plates. Each of the three L-shaped plates has a chuck fixedly connected to a close side.

[0012] Through the above technical solution: the design of the precision positioning mechanism adopts the combination of cylinder and nanometer-level linear motor, which can achieve high-precision positioning, ensure the stability and accuracy of the base component during the assembly process, and meet the market demand for high-precision assembly.

[0013] As a further description of the above technical solution:

[0014] The drive assembly includes a first gear, the top end of which is fixedly connected to the bottom end of the rotating circular plate. A motor is fixedly connected to the bottom inner wall of the worktable. A second gear is fixedly connected to the drive end of the motor. The outer side of the second gear is meshed with the outer side of the first gear.

[0015] Through the above technical solution, the gear transmission design of the drive component enables the rotating disc to operate efficiently, providing stable power support, thereby improving the overall efficiency and precision of assembly.

[0016] As a further description of the above technical solution:

[0017] The replacement assembly includes multiple insertion posts, the outer walls of which are slidably connected to the inner walls of the sliding block. Long strips are fixedly connected to adjacent sides of the multiple insertion posts, and clamps are fixedly connected to adjacent sides of the multiple long strips.

[0018] The above technical solution allows for the quick replacement of fixtures of different shapes, improving the flexibility and adaptability of the equipment, meeting the assembly requirements of various base components, and enhancing the practicality of the equipment.

[0019] As a further description of the above technical solution:

[0020] The sliding block has two circular grooves on its front and rear inner walls respectively. Springs are fixedly connected to the inner walls of the two circular grooves on their far sides. Ball-head columns are fixedly connected to the near sides of the two springs. The near sides of the multiple ball-head columns are engaged with the front and rear sides of the long plate. The outer wall of the long plate is slidably connected to the inner wall of the sliding block.

[0021] Through the above technical solution, the spring and ball-head column design of the sliding block enables the fixture to adapt to different base shapes during the clamping process, reducing assembly errors caused by stress deformation and further improving assembly accuracy.

[0022] As a further description of the above technical solution:

[0023] The top of the disk is provided with multiple T-shaped grooves, and the outer wall of the sliding block is slidably connected to the inner wall of the T-shaped grooves;

[0024] Through the above technical solution, the T-shaped groove design provides a more stable sliding path for the sliding block, reduces friction and wear, and ensures the long-term stable operation of the equipment.

[0025] As a further description of the above technical solution:

[0026] A welding auxiliary module is fixedly connected to the top of the disc, and shock-absorbing legs are fixedly connected to the four corners of the bottom of the workbench.

[0027] Through the above technical solutions, the integration of the welding auxiliary module improves the welding efficiency during the assembly process, while the design of the shock-absorbing legs effectively reduces the impact of external vibration on assembly accuracy, ensuring the realization of high-precision assembly.

[0028] As a further description of the above technical solution:

[0029] The outer walls of the multiple claws are slidably connected to the inner wall of the positioning disk, the surface of the claws is coated with a diamond-like carbon film, a central column is fixedly connected to the bottom inner wall of the worktable, and the inner wall of the positioning disk is slidably connected to the outer wall of the central column.

[0030] The above technical solution involves coating the chuck surface with a diamond-like carbon film, which enhances its wear resistance and corrosion resistance, extends its service life, ensures good performance during high-frequency assembly processes, and improves the reliability of the equipment.

[0031] This utility model has the following beneficial effects:

[0032] 1. In this utility model, when the workpiece is placed on the assembly platform, there will be a millimeter-level positional offset (such as manual loading error). Direct nanometer-level positioning is inefficient and prone to overtravel. The device uses an industrial camera for visual positioning to provide initial position information for subsequent positioning, ensuring the accuracy of the initial positioning. In the coarse positioning mechanism, the motor drives gear two, which in turn drives the rotating circular plate to rotate via gear one. The arc-shaped hole and T-shaped slide groove provide precise guidance, enabling the sliding column and sliding block to drive the clamping plate to achieve preliminary positioning, thereby improving the positioning efficiency.

[0033] 2. In this utility model, the core component of the precision positioning mechanism, the jaw, is coated with a diamond-like carbon film. This not only increases the friction between the jaw and the assembly, ensuring that the assembly will not easily slip during clamping, but also improves wear resistance and extends the service life of the jaw. During positioning, a nanometer-level linear motor generates power, which drives the jaw to contact the assembly through an L-shaped plate. The pressure sensor feeds back to the control system to achieve constant force clamping of N ± .N. This precise constant force control ensures that the clamping force on the assembly is stable and accurate during assembly in different batches, greatly improving the consistency and stability of assembly, avoiding deformation or positioning deviation of the assembly due to improper clamping force, and effectively improving product quality. Attached Figure Description

[0034] Figure 1 This is a perspective view of a high-precision micro-sized base component positioning and assembly device proposed in this utility model;

[0035] Figure 2 This is a schematic diagram of the worktable of a high-precision micro-sized base component positioning and assembly device proposed in this utility model.

[0036] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0037] Figure 4 This is a schematic diagram of the rotating disk of a high-precision micro-base component positioning and assembly device proposed in this utility model;

[0038] Figure 5 This is a schematic diagram of the positioning disk of a high-precision micro-sized base component positioning and assembly device proposed in this utility model.

[0039] Legend:

[0040] 1. Workbench; 2. Coarse positioning mechanism; 201. Disc; 202. Rotating circular plate; 203. Arc-shaped hole; 204. Sliding column; 205. Sliding block; 206. T-shaped slide; 207. Gear one; 208. Motor; 209. Gear two; 210. Insertion column; 211. Long strip plate; 212. Spring; 213. Ball head column; 3. Fine positioning mechanism; 301. Cylinder; 302. Ring plate; 303. Positioning disk; 304. Nanoscale linear motor; 305. L-shaped plate; 306. Claw; 307. Center column; 4. Welding auxiliary module; 5. Support frame; 6. Industrial camera. Detailed Implementation

[0041] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0042] Reference Figure 1 , Figure 2 and Figure 4This utility model provides an embodiment of a high-precision micro-sized base assembly positioning and assembly device, including a worktable 1. A coarse positioning mechanism 2 is fixedly connected to the top of the worktable 1, and a fine positioning mechanism 3 is fixedly connected to the inner bottom wall of the worktable 1. A central column 307 is fixedly connected to the inner bottom wall of the worktable 1 for placing workpieces. Shock-absorbing legs are fixedly connected to the four corners of the bottom of the worktable 1. The worktable 1 serves as the basic support structure of the entire device, bearing important components such as the coarse positioning mechanism 2, the fine positioning mechanism 3, and the central column 307. Its top provides an installation platform for the coarse positioning mechanism 2, ensuring stable coarse positioning operation, while the inner bottom wall is used to fix the fine positioning mechanism 3. Positioning mechanism 3 and center column 307 ensure coordinated operation of all components during precise positioning. Simultaneously, the shock-absorbing legs at the four corners of the bottom reduce the impact of external vibrations on the positioning assembly. The coarse positioning mechanism 2 includes a disc 201, with a rotating circular plate 202 rotatably connected to its inner wall. The disc 201 connects to and supports the rotating circular plate 202. A drive assembly is fixedly connected to the bottom end of the rotating circular plate 202, including a gear 1 207. The top end of gear 1 207 is fixedly connected to the bottom end of the rotating circular plate 202. A motor 208 is fixedly connected to the bottom inner wall of the worktable 1, and a gear 209 is fixedly connected to the drive end of the motor 208. The external part of the gear 207 is meshed with the external part of the gear 1. Gear 207 meshes with gear 209, transmitting the rotation of gear 209 to gear 207, which in turn drives the rotating circular plate 202 to rotate, providing power for the coarse positioning process. The rotating circular plate 202 has multiple arc-shaped holes 203 inside. Sliding columns 204 are slidably connected to the inner walls of the arc-shaped holes 203. A sliding block 205 is fixedly connected to the top of the sliding column 204. The top of the disc 201 has multiple T-shaped grooves 206. The outer wall of the sliding block 205 is slidably connected to the inner wall of the T-shaped groove 206. The sliding column 204 slides within the arc-shaped holes 203, causing the rotating circular plate 202 to rotate. The rotation is converted into linear motion, which drives the sliding block 205 to move within the T-shaped slide groove 206. The T-shaped slide groove 206 provides a guide track for the sliding block 205, enabling it to move within a specified path and thus perform preliminary positioning of the workpiece. The inner wall of the sliding block 205 is detachably connected to a replacement component. A support frame 5 is fixedly connected to the rear top of the worktable 1, and an industrial camera 6 is fixedly connected to the front top of the support frame 5. The support frame 5 provides a stable mounting position for the industrial camera 6. The industrial camera 6 is used to perform visual positioning of the workpiece placed on the central column 307, providing initial position information for subsequent coarse and fine positioning, and ensuring the accuracy of the positioning operation.

[0043] Specifically, the workbench 1, as the basic support structure of the entire device, ensures the stability of the coarse positioning mechanism 2, the fine positioning mechanism 3, and the central column 307, reducing the impact of external vibrations on the positioning assembly. Through the gear transmission system, the motor 208 drives the second gear 209, which in turn drives the first gear 207, causing the rotating circular plate 202 to rotate, providing an effective power source for the coarse positioning process. The guiding movement of the sliding block 205 within the T-shaped slide groove 206 enables the workpiece to be initially positioned within the specified path, improving the positioning accuracy. The visual positioning function of the industrial camera 6 provides initial position information for coarse and fine positioning, ensuring the accuracy of subsequent operations.

[0044] Reference Figure 2 and Figure 3 The replacement component includes multiple insertion posts 210. The outer wall of each insertion post 210 is slidably connected to the inner wall of a sliding block 205. The insertion posts 210 provide positioning and initial limiting during replacement. A long strip plate 211 is fixedly connected to the adjacent side of each insertion post 210. The outer wall of each long strip plate 211 is slidably connected to the inner wall of the sliding block 205. A clamping plate is fixedly connected to the adjacent side of each long strip plate 211. Two circular grooves are respectively formed on the inner walls of the front and rear sides of the sliding block 205. A spring 212 is fixedly connected to the inner wall of the opposite side of each of the two circular grooves. Each adjacent side of the spring 212 is fixedly connected to a ball head post 213. The adjacent sides of the multiple ball head posts 213 engage with the front and rear sides of the long strip plate 211. When the long strip plate 211 is installed into the sliding block 205, the long strip plate 211 presses against the ball head posts 213 and compresses the spring 212. After it is fully inserted into the sliding block 205, the spring 212's restoring ability is used to limit and fix the long strip plate 211. The elastic engagement of the spring 212 and the ball head posts 213 allows for convenient and quick replacement of different clamping plates to adapt to workpieces of different sizes and shapes, enhancing the versatility of the device.

[0045] Specifically, the design of multiple insertion posts 210 and long strips 211 allows for convenient and quick replacement of clamping plates, adapting to workpieces of different sizes and shapes, thus enhancing the versatility of the device. The positioning and initial limiting function of the insertion posts 210 ensures accurate positioning when changing clamping plates, reducing errors during the clamping process. The cooperative design of the spring 212 and the ball head post 213 simplifies the operation steps for changing clamping plates and improves work efficiency.

[0046] Reference Figure 1 , Figure 4 and Figure 5The precision positioning mechanism 3 includes two cylinders 301. The bottom ends of the two cylinders 301 are fixedly connected to the inner wall of the bottom of the worktable 1. The driving ends of the two cylinders 301 are fixedly connected to an annular plate 302. After the cylinders 301 are started, they generate power, which drives the annular plate 302 to move upward. The top end of the annular plate 302 is fixedly connected to a positioning disk 303, which transmits the power of the cylinders 301 to the positioning disk 303, ensuring that the positioning disk 303 can move stably with the movement of the cylinders 301. The inner wall of the positioning disk 303 is slidably connected to... Three nanometer-level linear motors 304 are fixedly connected to the outer wall of the central column 307 and the inner wall of the positioning disk 303. An L-shaped plate 305 is fixedly connected to the drive end of each nanometer-level linear motor 304. A jaw 306 is fixedly connected to each adjacent side of the three L-shaped plates 305. The surface of the jaw 306 is coated with a diamond-like carbon film. The outer walls of the multiple jaws 306 are slidably connected to the inner wall of the positioning disk 303. The nanometer-level linear motors 304 generate power, which drives the jaws 306 to contact the workpiece through the L-shaped plates 305. The diamond-like carbon film coating on the surface of the jaws 306 increases friction and wear resistance. Under the feedback of a pressure sensor, a constant force of 10N±0.2N is achieved, completing the precise positioning of the workpiece. It is a key execution component for precision positioning operations. A welding auxiliary module 4 is fixedly connected to the top of the disk 201. After the workpiece is positioned, it can assist in welding operations. The welding auxiliary module 4 includes an infrared thermometer and an inert gas nozzle.

[0047] Specifically, the design of the annular plate 302 and positioning disk 303 driven by cylinder 301 ensures the stability and accuracy of the workpiece during the precision positioning process, achieving a repeatability of less than 50μm. The design of the chuck 306 and the application of diamond-like carbon film coating on its surface increase friction and wear resistance. Combined with the feedback from the pressure sensor, a constant force of 10N±0.2N is achieved, ensuring the reliability of precise positioning. The welding auxiliary module 4 provides welding support after the workpiece is positioned, further enhancing the functionality and application range of the device.

[0048] Working principle: First, the workpiece is placed on the central column 307 and positioned visually using the industrial camera 6. Then, the motor 208 is started to generate power to drive the gear 209 to rotate. Since the gear 1 207 and the gear 2 209 are meshed, the rotation of the gear 2 209 drives the rotation of the gear 1 207, which in turn drives the rotating circular plate 202 to rotate. The arc-shaped hole 203 limits and guides the sliding column 204, and the T-shaped groove 206 guides the sliding block 205. Thus, the rotation of the rotating circular plate 202 drives the sliding column 204 to slide in the arc-shaped hole 203 and drives the sliding block 205 to move towards the center in the T-shaped groove 206. The movement of the sliding column 204 towards the center, combined with the connection of the long plate 211, drives the clamping plate to move towards the center and performs preliminary positioning of the workpiece. At the same time, the elastic engagement of the spring 212 and the ball head column 213 in the sliding block 205 allows for quick replacement of different clamping plates.

[0049] After the workpiece is initially positioned, the cylinder 301 is activated to generate power to move the annular plate 302 upward. Then, the nanometer-level linear motor 304 in the positioning disk 303 is activated to generate power to work with the L-shaped plate 305 to drive the jaws 306 to contact the workpiece. The pressure sensor feeds back to the control system to achieve a constant force of 10N±0.2N, thereby achieving precise positioning.

[0050] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-precision micro-sized base component positioning and assembly device, comprising a worktable (1), characterized in that: The top of the workbench (1) is fixedly connected to a coarse positioning mechanism (2), and the bottom inner wall of the workbench (1) is fixedly connected to a fine positioning mechanism (3). The coarse positioning mechanism (2) includes a disc (201), a rotating disc (202) is rotatably connected to the inner wall of the disc (201), a driving component is fixedly connected to the bottom end of the rotating disc (202), a plurality of arc-shaped holes (203) are opened inside the rotating disc (202), a sliding column (204) is slidably connected to the inner wall of the arc-shaped hole (203), a sliding block (205) is fixedly connected to the top end of the sliding column (204), a replacement component is detachably connected to the inner wall of the sliding block (205), a support frame (5) is fixedly connected to the rear side of the top end of the worktable (1), and an industrial camera (6) is fixedly connected to the front side of the top end of the support frame (5).

2. The high-precision micro-miniature base component positioning and assembly device according to claim 1, characterized in that: The precision positioning mechanism (3) includes two cylinders (301). The bottom ends of the two cylinders (301) are fixedly connected to the bottom inner wall of the worktable (1). The driving ends of the two cylinders (301) are fixedly connected to an annular plate (302). The top end of the annular plate (302) is fixedly connected to a positioning disk (303). The inner wall of the positioning disk (303) is fixedly connected to three nanometer-level linear motors (304). The driving ends of the nanometer-level linear motors (304) are fixedly connected to L-shaped plates (305). The adjacent sides of the three L-shaped plates (305) are all fixedly connected to claws (306).

3. The high-precision micro-miniature base component positioning and assembly device according to claim 1, characterized in that: The drive assembly includes a gear one (207), the top end of which is fixedly connected to the bottom end of the rotating circular plate (202). A motor (208) is fixedly connected to the bottom inner wall of the worktable (1). A gear two (209) is fixedly connected to the drive end of the motor (208). The outside of the gear two (209) is meshed with the outside of the gear one (207).

4. The high-precision micro-sized base component positioning and assembly device according to claim 1, characterized in that: The replacement assembly includes multiple insertion posts (210), the outer walls of which are slidably connected to the inner wall of the sliding block (205). Long strips (211) are fixedly connected to adjacent sides of the multiple insertion posts (210), and clamps are fixedly connected to adjacent sides of the multiple long strips (211).

5. The high-precision micro-miniature base component positioning and assembly device according to claim 4, characterized in that: The sliding block (205) has two circular grooves on its front and rear inner walls respectively. Springs (212) are fixedly connected to the inner walls of the two circular grooves on opposite sides. Ball-head columns (213) are fixedly connected to the adjacent sides of the two springs (212). The adjacent sides of the multiple ball-head columns (213) engage with the front and rear sides of the long strip plate (211). The outer wall of the long strip plate (211) is slidably connected to the inner wall of the sliding block (205).

6. The high-precision micro-miniature base component positioning and assembly device according to claim 1, characterized in that: The top of the disc (201) is provided with a plurality of T-shaped grooves (206), and the outer wall of the sliding block (205) is slidably connected to the inner wall of the T-shaped grooves (206).

7. The high-precision micro-miniature base component positioning and assembly device according to claim 1, characterized in that: The top of the disc (201) is fixedly connected to a welding auxiliary module (4), and the bottom four corners of the workbench (1) are fixedly connected to shock-absorbing legs.

8. The high-precision micro-miniature base component positioning and assembly device according to claim 2, characterized in that: The outer walls of the multiple claws (306) are slidably connected to the inner wall of the positioning disk (303). The surface of the claws (306) is coated with a diamond-like carbon film. A central column (307) is fixedly connected to the bottom inner wall of the worktable (1). The inner wall of the positioning disk (303) is slidably connected to the outer wall of the central column (307).

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